Tab



FIG. 1 is a top perspective view of a tab of the present design;

FIG. 2 is a top view of the tab;

FIG. 3 is a bottom view of the tab;

FIG. 4 is a front view of the tab;

FIG. 5 is a back view of the tab;

FIG. 6 is a left view of the tab; and,

FIG. 7 is a right view of the tab.

In the drawings, the broken lines show portions of a tab and a device that form no part of the claim. 

CLAIM The ornamental design for a tab, as shown and described. 